Get New outfits

Go to the Press Start Screen and enter the following QUICKLY

Elvis- Y, L, L, Up, Up
BMX- Y, X, Left, Right, Left, X.

Get Vanessa Character

Go to LA and look for the Girl sitting down on top of a brick building. You must do a 20,000 point adrenaline trick in front of her. You can manual inbetween tricks so you don't have to pull off a single trick

Get Volcano Character

Finish the game using any character and FINISH ALL objectives

Get Day Smith Character

Go to OK city. Now go to the ramp that is put there with the fork lift and into the secret garage. Now you must grind on that black box and it will open into a vert ramp. Use that ramp and grind on the bullhorns and jump into the small room and you unlock Smith